EP1121180B1 - Device for playing a ball game - Google Patents

Abstract

The invention relates to a device for playing a ball game, especially badminton. The device has a handle, a shaft and a racquet head. A weight is guided in a position variable manner along at least one part of the longitudinal extension of the shaft.

Description

The invention relates to a device for Carrying out a ball game, in particular from Badminton, according to the generic term of Claim 1.

Such a device is known from BE-A-897 307.

Such devices are usually as one Racket trained in the area of the handle with the hand of the user and after a corresponding swing with the club head is hit against the ball to be played. The usual racket constructions make one Compromise between enabling a sensitive Playing style and enabling hard and high-energy blows. Because of this Realization as a compromise between different The optimal construction meets the requirements not with regard to the individual requirements in front.

From EP-A-0 228 491 it is already known one Racket for performing a ball game like this construct that in the area of a shaft that between a handle and a covering holding frame is arranged, a movable Weight is provided. The shaft is made of two relative to each other with a distance Striving trained. There is one between the struts Guide bar positioned for weight. About two Rubber bands will weigh against one in the range of Handle arranged stop clamped. at Apply sufficient acceleration force the weight overcomes the preload and becomes in Moved towards the frame. It snaps here Weight with a locking lug behind a projection and remains in this position until manually '' unlocking is carried out. After a Unlocking reverses the weight due to the spring force acting in the starting position back near the handle.

A racket is known from US-A-3 975 018 Carrying out a ball game known in which a weight is arranged within a shaft, by an actuator using Cables can be positioned. This is also done here a static shift in weight by one predefined center of gravity of the racket.

From DE-A-32 18 854 a racket is Carrying out a ball game known in which a Center of gravity shift using an inside of a racket movably guided weight, that under the action of a spiral spring or by the Gravity returns to its original position.

FR-A-2 496 471 also describes an arrangement at the inside of a club's shaft Weight, preferably a heavy liquid, is guided flexibly and depending on one centrifugal force changes their position.

A hammer is described in US-A-4,302,008 which can move a weight within a stem is guided by a spiral spring in a Starting position is withdrawn. to This will increase the impact mass of the hammer Weight when subjected to centrifugal force moved the hammer head and returns after one Termination of the hammer blow by the spring force in its starting position back.

The object of the present invention is therefore a Device of the type mentioned in the introduction construct that a improved playability is supported.

This object is achieved in that the weight is guided on the outside along the shaft is that a clamping force of the spring element of one Adjustment element can be specified, and that the Spring element essentially extends linearly and in some areas on the outside along the shaft.

Due to the variable guidance of the weight along the shaft it is possible to get one Change of focus of the racket at To carry out a blow. At a The outward movement shifts the weight due to the acting inertial forces along the shaft in Direction to the club head. This is the Center of gravity of the racket in contact with the Ball closer to that hit by the ball Contact area. This can result in a higher Impact energy can be introduced into the ball.

For specifying a defined starting position it is intended that the weight is relative to a Stop is spring-loaded.

A sensitive way of playing at low Strike speeds are supported by the fact that the weight of a spring element with a in Direction of spring force oriented on the handle is acted upon.

It is also for a sensitive way of playing low impact speeds advantageous that by a biasing force of the spring element Response threshold for a change in position of the Weight along the shaft is specified.

This creates a defined work area provided that a positioning path for the weight is limited by two stops.

To avoid hard material contact with the Change of focus is proposed that at least one of the stops as a damping element is trained.

This is a simple constructive realization provided that the weight is along the outside Shaft is guided.

To enable individual customization provided that a clamping force of the spring element of an adjusting element can be predetermined.

This creates a number of defined settings provided that to define at least two Positioning of the adjustment element detents are provided.

A simple and compact implementation is also possible supported by the fact that the spring element at least two elastic bands is formed.

The number of components used can thereby be reduced that the elastic bands by a deflection are interconnected and a common component form.

Fig. 1:

Eine Draufsicht eines Badminton-Schlägers,

Fig. 2:

Eine Seitenansicht der Vorrichtung gemäß Fig. 1,

Fig. 3:

eine vergrößerte Darstellung eines Einstellelementes zur Vorgabe einer Federverspannung,

Fig. 4:

ein mit Rastungen versehendes Gegenelement zum Einstellelemet gemäß Fig. 3,

Fig. 5:

eine vergrößerte Darstellung einer möglichen Rasterung,

Fig. 6:

eine vergrößerte Darstellung eines Schaftes des Schlägers,

Fig. 7:

eine Darstellung eines entlang des Schaftes verschiebbaren Gewichtes,

Fig. 8:

eine Darstellung des Gewichtes gemäß Blickrichtung (VIII) in Fig. 7,

Fig. 9:

eine demontierte Gewichtshälfte gemäß der Ausführung in Fig. 7,

Fig. 10:

eine Seitenansicht eines Anschlages zur Begrenzung des Positionierweges des Gewichtes und

Fig. 11:

eine Darstellung des Anschlages gemäß Blickrichtung (XI) in Fig. 10.

Exemplary embodiments of the invention are shown schematically in the drawing. Show it:

Fig. 1:

A top view of a badminton racket,

Fig. 2:

1 shows a side view of the device according to FIG. 1,

Fig. 3:

an enlarged view of an adjusting element for specifying a spring tension,

Fig. 4:

a counter element with detents to the adjusting element according to FIG. 3,

Fig. 5:

an enlarged view of a possible grid,

Fig. 6:

an enlarged view of a shaft of the racket,

Fig. 7:

a representation of a weight that can be displaced along the shaft,

Fig. 8:

a representation of the weight according to the viewing direction (VIII) in Fig. 7,

Fig. 9:

a disassembled half of the weight according to the embodiment in Fig. 7,

Fig. 10:

a side view of a stop to limit the positioning path of the weight and

Fig. 11:

a representation of the stop according to the viewing direction (XI) in Fig. 10.

Fig. 1 shows an embodiment of the device as Racket for playing a badminton game. The Device has a handle (1), a shaft (2) as well as a club head (3). The club head (3) consists of a frame (4) and a bracing (5). The frame (4) is attached to the shaft (2) and surrounds the bracing (5).

A weight (6) can be moved along the shaft (2) guided. A positioning path (7) for the weight (6) is limited by stops (8, 9). The attacks (8, 9) are preferably made of a damping material, for example made of rubber or plastic.

In an initial state shown in FIG. 1 the weight (6) of a spring element (10) against the Stop (8), the handle (1) facing is tense. The spring element (10) can Elastic bands should be formed. According to the embodiment 1 two elastic bands are used.

The spring element (10) connected to an adjusting element (11). The adjustment element (11) in the area of the shaft (2) facing extension of the handle (1) arranged his.

Extend according to the embodiment shown in FIG. 1 the elastic bands in the area of the handle (1) through guide elements (12) between a handle body (13) and a handle wrap (14) are arranged. The guide elements (12) can, for example tubular or as an open guide profile be trained.

A fixation of the adjusting element (11) in the area the handle (1) can be locked (15) can be carried out. The guide element (12) partially inserted into a handle interior (16).

Fig. 2 shows a side view of the racket according to Fig. 1. In particular, it can be seen again that in a basic state the weight (6) by the spring element (10) is pulled against the stop (8).

Fig. 3 shows the structure of the Adjustment element (11). It can be seen that the adjusting element (11) with a profile (17) and a Center pin (18) is provided. Furthermore points the adjusting element (11) has a transverse bore (19), through which a spring element designed as an elastic band (10) can be passed. This makes it possible just use one component to support the weight (6) to be spring loaded at two points.

Fig. 4 shows a base element (20) for the setting element (11). The base element (20) is in the interior of the handle (16) used and has a counter-profiling (21) for the profiling (17). The profiling (17) and the counter-profiling (21) form together a grid. The base element (20) is also equipped with a bore (22) into which the center pin (18) of the adjusting element (11) can be inserted is.

Fig. 5 shows a possible embodiment for the profiling (17) or the counter-profiling (21). By a corresponding adjustment of the adjusting element (11) can the current tension of the spring element (10) can be influenced.

Fig. 6 shows an enlarged view possible training for the shaft (2). The shaft (2) is constructed here to be a spring Deflection when performing a striking motion support.

Fig. 7 shows an embodiment of the weight (6) in a Construction from two half shells (23). The half shells (23) delimit a central recess (24) through which the shaft (2) is passed through. A connection the half-shells (23) with each other with the help of Screws (25) take place. For connection to the spring element (10) recesses (26) are provided through which are formed when the spring element (10) stretch out the ends of the elastic band as an elastic band can.

From Fig. 8 it can be seen that as screws (25) for Support for outside planning, for example Allen screws can be used.

Fig. 9 shows a simplified representation of the outer contour the half-shells (23). 10 and 11 illustrate the structure of the stops (8, 9). The Stops (8, 9) are pushed onto the shaft (2) and enclose it in a ring.

Due to the application of the preload using the Bracing (5) is achieved at a relatively low Beat speeds no change in center of gravity takes place. This makes it a relatively sensitive Game supported. Only from one through the preload definable stroke speed that shifts Weight (6) along the shaft (2) and shifts the Center of gravity of the racket in the direction of the club head (3). This can result in high kinetic energy be used in the event of a ball contact and the ball will transmit a high kinetic energy. A shift in focus is therefore only in relatively strong Strikes, a so-called "smash".

Claims (7)

1. Device for playing a ball game, in particular badminton, which has a handle (1), a shaft (2) and a racket head (3) and in which a weight (6) is guided positionally variably along at least part of a longitudinal extent of the shaft (2), and in which the weight (6) is braced resiliently relative to a stop (8, 9), is acted on by a spring element (10) with a spring force oriented in the direction of the handle (1) and is freely displaceable in its entire movement range, characterized in that the weight (6) is guided along the shaft (2) on the outside, in that a tensioning force of the spring element (10) can be preset by an adjusting element (11), and in that the spring element (10) extends along the shaft (2) on the outside essentially linearly and in areas.
2. Device according to Claim 1, characterized in that a response threshold for a change in position of the weight (6) along the shaft (2) is preset by a pretensioning force of the spring element (10).
3. Device according to Claim 1 or 2, characterized in that a positioning travel (7) for the weight (6) is limited by two stops (8, 9).
4. Device according to Claim 3, characterized in that at least one of the stops (8, 9) is designed as a damping element.
5. Device according to one of Claims 1 to 4, characterized in that catches are provided for defining at least two positions of the adjusting element (11).
6. Device according to one of Claims 1 to 5, characterized in that the spring element (10) is made from at least two rubber strings.
7. Device according to Claim 6, characterized in that the rubber strings are interconnected by a deflection and form a combined component.

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